<template>
  <view
    class="uni-easyinput"
    :class="{ 'uni-easyinput-error': msg }"
    :style="{ color: inputBorder && msg ? '#e43d33' : styles.color }"
  >
    <view
      class="uni-easyinput__content"
      :class="{
				'is-input-border': inputBorder,
				'is-input-error-border': inputBorder && msg,
				'is-textarea': type === 'textarea',
				'is-disabled': disabled
			}"
      :style="{
				'border-color': inputBorder && msg ? '#dd524d' : styles.borderColor,
				'background-color': disabled ? styles.disableColor : ''
			}"
    >
      <uni-icons
        v-if="prefixIcon"
        class="content-clear-icon"
        :type="prefixIcon"
        color="#c0c4cc"
        @click="onClickIcon('prefix')"
      ></uni-icons>
      <textarea
        v-if="type === 'textarea'"
        class="uni-easyinput__content-textarea"
        :class="{ 'input-padding': inputBorder }"
        :name="name"
        :value="val"
        :placeholder="placeholder"
        :placeholderStyle="placeholderStyle"
        :disabled="disabled"
        placeholder-class="uni-easyinput__placeholder-class"
        :maxlength="inputMaxlength"
        :focus="focused"
        :autoHeight="autoHeight"
        :adjust-position="false"
        @input="onInput"
        @blur="onBlur"
        @focus="onFocus"
        @confirm="onConfirm"
      ></textarea>
      <input
        v-else
        :type="type === 'password' ? 'text' : type"
        class="uni-easyinput__content-input"
        :style="{
					'padding-right': type === 'password' || clearable || prefixIcon ? '' : '10px',
					'padding-left': paddingLeft + 'px'

				}"
        :name="name"
        :value="val"
        :password="!showPassword && type === 'password'"
        :placeholder="placeholder"
        :placeholderStyle="placeholderStyle"
        placeholder-class="uni-easyinput__placeholder-class"
        :disabled="disabled"
        :maxlength="inputMaxlength"
        :focus="focused"
        :confirmType="confirmType"
        :adjust-position="false"
        @focus="onFocus"
        @blur="onBlur"
        @input="onInput"
        @change="onInput"
        @confirm="onConfirm"
        :cursor-spacing="30"
        always-embed
      />
      <template v-if="type === 'password' && passwordIcon">
        <uni-icons
          v-if="val"
          class="content-clear-icon"
          :class="{ 'is-textarea-icon': type === 'textarea' }"
          :type="showPassword ? 'eye-slash-filled' : 'eye-filled'"
          :size="18"
          color="#c0c4cc"
          @click="onEyes"
        ></uni-icons>
      </template>
      <template v-else-if="suffixIcon">
        <uni-icons
          v-if="suffixIcon"
          class="content-clear-icon"
          :type="suffixIcon"
          color="#c0c4cc"
          @click="onClickIcon('suffix')"
        ></uni-icons>
      </template>
      <template v-else>
        <uni-icons
          class="content-clear-icon"
          :class="{ 'is-textarea-icon': type === 'textarea' }"
          type="clear"
          :size="clearSize"
          v-if="clearable && val && !disabled"
          color="#c0c4cc"
          @click="onClear"
        ></uni-icons>
      </template>
      <slot name="right"></slot>
    </view>
  </view>
</template>

<script>
  // import {
  // 	debounce,
  // 	throttle
  // } from './common.js'
  /**
   * Easyinput 输入框
   * @description 此组件可以实现表单的输入与校验，包括 "text" 和 "textarea" 类型。
   * @tutorial https://ext.dcloud.net.cn/plugin?id=3455
   * @property {String}	value	输入内容
   * @property {String }	type	输入框的类型（默认text） password/text/textarea/..
   * 	@value text			文本输入键盘
   * 	@value textarea	多行文本输入键盘
   * 	@value password	密码输入键盘
   * 	@value number		数字输入键盘，注意iOS上app-vue弹出的数字键盘并非9宫格方式
   * 	@value idcard		身份证输入键盘，信、支付宝、百度、QQ小程序
   * 	@value digit		带小数点的数字键盘	，App的nvue页面、微信、支付宝、百度、头条、QQ小程序支持
   * @property {Boolean}	clearable	是否显示右侧清空内容的图标控件，点击可清空输入框内容（默认true）
   * @property {Boolean}	autoHeight	是否自动增高输入区域，type为textarea时有效（默认false）
   * @property {String }	placeholder	输入框的提示文字
   * @property {String }	placeholderStyle	placeholder的样式(内联样式，字符串)，如"color: #ddd"
   * @property {Boolean}	focus	是否自动获得焦点（默认false）
   * @property {Boolean}	disabled	是否禁用（默认false）
   * @property {Number }	maxlength	最大输入长度，设置为 -1 的时候不限制最大长度（默认140）
   * @property {String }	confirmType	设置键盘右下角按钮的文字，仅在type="text"时生效（默认done）
   * @property {Number }	clearSize	清除图标的大小，单位px（默认15）
   * @property {String}	prefixIcon	输入框头部图标
   * @property {String}	suffixIcon	输入框尾部图标
   * @property {Boolean}	trim	是否自动去除两端的空格
   * @value both	去除两端空格
   * @value left	去除左侧空格
   * @value right	去除右侧空格
   * @value start	去除左侧空格
   * @value end		去除右侧空格
   * @value all		去除全部空格
   * @value none	不去除空格
   * @property {Boolean}	inputBorder	是否显示input输入框的边框（默认true）
   * @property {Boolean}	passwordIcon	type=password时是否显示小眼睛图标
   * @property {Object}	styles	自定义颜色
   * @event {Function}	input	输入框内容发生变化时触发
   * @event {Function}	focus	输入框获得焦点时触发
   * @event {Function}	blur	输入框失去焦点时触发
   * @event {Function}	confirm	点击完成按钮时触发
   * @event {Function}	iconClick	点击图标时触发
   * @example <uni-easyinput v-model="mobile"></uni-easyinput>
   */

  export default {
    name: 'optimize-input',
    emits: ['click', 'iconClick', 'update:modelValue', 'input', 'focus', 'blur', 'confirm'],
    model: {
      prop: 'modelValue',
      event: 'update:modelValue'
    },
    props: {
      name: String,
      value: [Number, String],
      modelValue: [Number, String],
      type: {
        type: String,
        default: 'text'
      },
      clearable: {
        type: Boolean,
        default: true
      },
      autoHeight: {
        type: Boolean,
        default: false
      },
      placeholder: String,
      placeholderStyle: String,
      focus: {
        type: Boolean,
        default: false
      },
      disabled: {
        type: Boolean,
        default: false
      },
      maxlength: {
        type: [Number, String],
        default: 140
      },
      confirmType: {
        type: String,
        default: 'done'
      },
      clearSize: {
        type: [Number, String],
        default: 15
      },
      inputBorder: {
        type: Boolean,
        default: true
      },
      prefixIcon: {
        type: String,
        default: ''
      },
      suffixIcon: {
        type: String,
        default: ''
      },
      trim: {
        type: [Boolean, String],
        default: true
      },
      passwordIcon: {
        type: Boolean,
        default: true
      },
      styles: {
        type: Object,
        default() {
          return {
            color: '#333',
            disableColor: '#F7F6F6',
            borderColor: '#e5e5e5'
          };
        }
      },
      errorMessage: {
        type: [String, Boolean],
        default: ''
      },
      paddingLeft:{
        type: [Number, String],
        default: 0
      }
    },
    data() {
      return {
        focused: false,
        errMsg: '',
        val: '',
        showMsg: '',
        border: false,
        isFirstBorder: false,
        showClearIcon: false,
        showPassword: false
      };
    },
    computed: {
      msg() {
        return this.errorMessage || this.errMsg;
      },
      // 因为uniapp的input组件的maxlength组件必须要数值，这里转为数值，用户可以传入字符串数值
      inputMaxlength() {
        return Number(this.maxlength);
      }
    },
    watch: {
      value(newVal) {
        if (this.errMsg) this.errMsg = '';
        this.val = newVal;
        // fix by mehaotian is_reset 在 uni-forms 中定义
        if (this.form && this.formItem && !this.is_reset) {
          this.is_reset = false;
          this.formItem.setValue(newVal);
        }
      },
      modelValue(newVal) {
        if (this.errMsg) this.errMsg = '';
        this.val = newVal;
        if (this.form && this.formItem && !this.is_reset) {
          this.is_reset = false;
          this.formItem.setValue(newVal);
        }
      },
      focus(newVal) {
        this.$nextTick(() => {
          this.focused = this.focus;
        });
      }
    },
    created() {
      if (!this.value && this.value !== 0) {
        this.val = this.modelValue;
      }
      if (!this.modelValue && this.modelValue !== 0) {
        this.val = this.value;
      }
      this.form = this.getForm('uniForms');
      this.formItem = this.getForm('uniFormsItem');
      if (this.form && this.formItem) {
        if (this.formItem.name) {
          if (!this.is_reset) {
            this.is_reset = false;
            this.formItem.setValue(this.val);
          }
          this.rename = this.formItem.name;
          this.form.inputChildrens.push(this);
        }
      }
    },
    mounted() {
      this.$nextTick(() => {
        this.focused = this.focus;
      });
    },
    methods: {
      /**
       * 初始化变量值
       */
      init() {},
      onClickIcon(type) {
        this.$emit('iconClick', type);
      },
      /**
       * 获取父元素实例
       */
      getForm(name = 'uniForms') {
        let parent = this.$parent;
        let parentName = parent.$options.name;
        while (parentName !== name) {
          parent = parent.$parent;
          if (!parent) return false;
          parentName = parent.$options.name;
        }
        return parent;
      },

      onEyes() {
        this.showPassword = !this.showPassword;
      },
      onInput(event) {
        let value = event.detail.value;
        // 判断是否去除空格
        if (this.trim) {
          if (typeof this.trim === 'boolean' && this.trim) {
            value = this.trimStr(value);
          }
          if (typeof this.trim === 'string') {
            value = this.trimStr(value, this.trim);
          }
        }
        if (this.errMsg) this.errMsg = '';
        this.val = value;
        // TODO 兼容 vue2
        this.$emit('input', value);
        // TODO　兼容　vue3
        this.$emit('update:modelValue', value);
      },
      onFocus(event) {
        this.$emit('focus', event);
      },
      onBlur(event) {
        let value = event.detail.value;
        this.$emit('blur', event);
      },
      onConfirm(e) {
        this.$emit('confirm', e.detail.value);
      },
      onClear(event) {
        this.val = '';
        // TODO 兼容 vue2
        this.$emit('input', '');
        // TODO 兼容 vue2
        // TODO　兼容　vue3
        this.$emit('update:modelValue', '');
      },
      fieldClick() {
        this.$emit('click');
      },
      trimStr(str, pos = 'both') {
        if (pos === 'both') {
          return str.trim();
        } else if (pos === 'left') {
          return str.trimLeft();
        } else if (pos === 'right') {
          return str.trimRight();
        } else if (pos === 'start') {
          return str.trimStart();
        } else if (pos === 'end') {
          return str.trimEnd();
        } else if (pos === 'all') {
          return str.replace(/\s+/g, '');
        } else if (pos === 'none') {
          return str;
        }
        return str;
      }
    }
  };
</script>

<style lang="scss">
  $uni-error: #e43d33;
  $uni-border-1: #dcdfe6 !default;
  .uni-easyinput {
    /* #ifndef APP-NVUE */
    width: 100%;
    /* #endif */
    flex: 1;
    position: relative;
    text-align: left;
    color: #333;
    font-size: 14px;
  }

  .uni-easyinput__content {
    flex: 1;
    /* #ifndef APP-NVUE */
    width: 100%;
    display: flex;
    box-sizing: border-box;
    min-height: 72rpx;
    /* #endif */
    flex-direction: row;
    align-items: center;
  }

  .uni-easyinput__content-input {
    /* #ifndef APP-NVUE */
    width: auto;
    /* #endif */
    position: relative;
    overflow: hidden;
    flex: 1;
    line-height: 56rpx;
    font-size: 28rpx;
    height: 56rpx;
  }
  .uni-easyinput__placeholder-class {
    color: #bbbbbb;
    font-size: 28rpx;
    font-weight: 400;
    line-height: normal;
  }
  .is-textarea {
    align-items: flex-start;
  }

  .is-textarea-icon {
    margin-top: 5px;
  }

  .uni-easyinput__content-textarea {
    position: relative;
    overflow: hidden;
    flex: 1;
    line-height: 1.5;
    font-size: 14px;
    padding-top: 6px;
    padding-bottom: 10px;
    height: 80px;
    /* #ifndef APP-NVUE */
    min-height: 80px;
    width: auto;
    /* #endif */
  }

  .input-padding {
    padding-left: 10px;
  }

  .content-clear-icon {
    padding: 0 5px;
  }

  .label-icon {
    margin-right: 5px;
    margin-top: -1px;
  }

  // 显示边框
  .is-input-border {
    /* #ifndef APP-NVUE */
    display: flex;
    box-sizing: border-box;
    /* #endif */
    flex-direction: row;
    align-items: center;
    border: 1px solid $uni-border-1;
    border-radius: 4px;
  }

  .uni-error-message {
    position: absolute;
    bottom: -17px;
    left: 0;
    line-height: 12px;
    color: $uni-error;
    font-size: 12px;
    text-align: left;
  }

  .uni-error-msg--boeder {
    position: relative;
    bottom: 0;
    line-height: 22px;
  }

  .is-input-error-border {
    border-color: $uni-error;
    .uni-easyinput__placeholder-class {
      // color: mix(#fff, $uni-error, 50%);
    }
  }

  .uni-easyinput--border {
    margin-bottom: 0;
    padding: 10px 15px;
    // padding-bottom: 0;
    border-top: 1px #eee solid;
  }

  .uni-easyinput-error {
    padding-bottom: 0;
  }

  .is-first-border {
    /* #ifndef APP-NVUE */
    border: none;
    /* #endif */
    /* #ifdef APP-NVUE */
    border-width: 0;
    /* #endif */
  }

  .is-disabled {
    border-color: red;
    background-color: #f7f6f6;
    color: #d5d5d5;
    .uni-easyinput__placeholder-class {
      color: #d5d5d5;
      font-size: 12px;
    }
  }
</style>
